Process for the fermentation of milk.



- No Drawing.-

UNITED earns PATENT OFFICE.

JOHN P. CABAN NE, OF ST. LOUIS, MISSOURI.

PROCESS FOR THE FERMENTATION OF MILK.

To all whom it may concern:

Be'it known that I, JOHN P. CABANNE, a citizen of the United States,'and resident of St. Louis, VMissouri, have invented certain new and useful Improvements in Processes for the Fermentation of Milk, of which the following is a specification.

My invention relates to an improved process for the fermentation of milk and has for its object to provide a fermented milk product in which the fermentation is due alone to the introduction of a germ known as the Bulgarian bacillus.

In my process I employ whole milk, the

' first step of the treatment whereof under my process consists in the pasteurization of said milk, which is accomplished by the use i of any of the apparatuses well known in the'art, in which the milk is held at a tem perature of 190? Fahrenheit for about five 1 minutes, although pasteurization may be effected at a lower temperature held during a longer period. The whole milk having thus been pasteurized is reduced to a temperature of about 90 Fahrenheit and at that temperature the germ known as the Bulgarian bacillus, the culture of which is maintained at a temperature of about 90 Fahrenheit is introduced to themass of whole milk so pasteurized in the proportion of about one pint of said culture to eight gallons of milk.

The pasteurized whole milk containing thev Specification of Letters Patent. Patented Dec. 21, 1909. Application 'file d July 9, 1909. Serial No. 507,018.

lactic acid has been developed, the further fermentation of the product is arrested by reducing the liquid'to a temperature of 35 Fahrenheit, and the product is to be maintained between 35 F. and 40 F. until it has been consumed, inasmuch as the elevation of its temperature materially above 40 F. re-

sults in the resumption of fermentation and the production of an excess of lactic acid.

Havin thus fully described my invention, what I c aim as new and desire to have secured to me by the grant of Letters Patent, is:

The improved process for the fermentation of milk consisting of the following steps: pasteurizing whole milk; reducing the temperature of the pasteurized whole milk to about 90 F the addition to said Whole milk at a temperature of 90 F. of the culture of Bulgarian bacillus 'in the proportion of about one pint of said culture to eight gallons of pasteurized milk; maintaining the temperature of the pasteurized milk containing said culture, at about 90 F., until the production of about one er cent. of lactic acid has resulted; arrestmg the fermentation of the fermented prodnot by reducing its temperature to between 

